I didn't want a massive screen, but thought of going with 2 screens for editing i.e. One in Portrait and one in Landscape. Due to contraints of only having one DP 1.2 connector on my GTX 970, I thought of going to the 27" 4K - so the portrait images would be physically bigger ( saves expanding an image to check the eyes in say a full length portrait. ) I Wouldn't bother normally, but as this range has just bought out a 27" with a faster refresh rate thats slightly attractive. Plus a friend is happy to buy the 24" one for decent money, so very viable finacially ( rather than upgrade the GPU and buy another 24". Ref the user experience I Really love retina screen type of image at 3840 x 2160, naturally at 24"s its DPI is superb - when one moves to 27" with a lower dpi, is it still lovely?